ByteSeq EC2OSP(const EC_Point & Point, EC::EC2OSP_COMPRESS_MODE mode)
{
const unsigned char tY =
((mode == EC::EC2OSP_COMPRESSED) ||
(mode == EC::EC2OSP_HYBRID)) ?
EC_CPoint::compress_tY(Point) : 0;
if (Point.isZero())
return ByteSeq(0);
/* Pad - according to example of 2^m/ECNR.
* Check this. Don't see much sense */
const long Pad = L(Point.getEC().getModulus());
const unsigned int U = ((mode == EC::EC2OSP_UNCOMPRESSED) ||
(mode == EC::EC2OSP_HYBRID)) ? 1 : 0;
const unsigned int C = ((mode == EC::EC2OSP_COMPRESSED) ||
(mode == EC::EC2OSP_HYBRID)) ? 1 : 0;
const ByteSeq X(FE2OSP(Point.getX(), Pad));
const ByteSeq H(FE2OSP(4*U+C*(2+tY)));
if (U)
return H || X || FE2OSP(Point.getY(), Pad);
else
return H || X;
}
virtual bool setPublicKey(const Octet & PublicKey)
{
if (PublicKey.getDataSize() != ( _Lcm * 2 ))
return false;
tOS2FEP<typename EC_Dscr::aECP> OS2FEP;
_Curve.enter_mod_context(EC_Dscr::aEC::FIELD_CONTEXT);
_publicKey =
toProjective(_Curve
.create(OS2FEP(ByteSeq(PublicKey.getData(), _Lcm)),
OS2FEP(ByteSeq(PublicKey.getData() + _Lcm, _Lcm))),
_PCurve);
_Curve.leave_mod_context();
_isPublicKeyLoaded = true;
setPublicKeyHook();
return _isPublicKeyLoaded;
}
/*! \brief Create a nonce.
\returns Nonce.
*/
NZSPtr<ROAPNonce> OMADRMNonceCreator::CreateNonce() {
nonce = nonce + "a";
Base64StringT tmp;
Base64Factory::Encode(ByteSeq((ByteT*)nonce.data(), nonce.size()), tmp);
return new ROAPNonce(tmp);
}
/*! \brief Encode as byte array.
Encode for purpose of stream encoding, signature verification etc.
\param encoded output, encoded byte array.
\returns Boolean indicating success or failure.
*/
bool NMACEncSecureContainerIPMPData::MPEG2Encode(ByteSeq& encoded) const {
return IPMPData::MPEG2Encode(0x09, ByteSeq((ByteT)0x80) + encrypted.MPEG2Encode(),
encoded);
}
/*! \brief Encode as byte array.
Encode for purpose of stream encoding, signature verification etc.
\param encoded output, encoded byte array.
\returns Boolean indicating success or failure.
*/
bool NMACNEncSecureContainerIPMPData::MPEG2Encode(ByteSeq& encoded) const {
return IPMPData::MPEG2Encode(0x09, ByteSeq((ByteT)0x00) + message.MPEG2Encode(),
encoded);
}
